Fix:1 for #97 Refactor rename Consonants to Consonant.

As per #97 Plural rules no singular.
Consonants to Consonant.
Consonants now deprecated.
Documentation updated.
Fix:2 for #97 Refactor rename Vowels to Vowel.

As per #97 Plural rules no singular.
Vowels to Vowel.
Vowelss now a deprecated decorator class of Vowel.
Documentation updated.